import time
from django.shortcuts import render,redirect, render_to_response
from django.views import View
from QQLoginTool.QQtool import OAuthQQ
from django.conf import settings
from django import http
from requests import Response

from meiduo_mall.utils.response_code import RET
from .models import OAuthQQUser, OAuthSinaUser
from django.contrib.auth import login,authenticate
from .utils import encode_openid,decode_openid
from django_redis import get_redis_connection
from users.models import User
from carts.utils import merge_cookie_redis_cart
from meiduo_mall.utils import sinaweibopy3

# 1,获取qq登陆界面
class QQLoginView(View):
    def get(self,request):
        #1,获取参数
        state = request.GET.get("next", "/")

        # 2,创建OAuthQQ对象
        oauth_qq = OAuthQQ(client_id=settings.QQ_CLIENT_ID,
                client_secret=settings.QQ_CLIENT_SECRET,
                redirect_uri=settings.QQ_REDIRECT_URI,
                state=state
                )

        # 3,获取qq登陆页面
        login_url = oauth_qq.get_qq_url()

        # 4,返回响应
        return http.JsonResponse({"login_url":login_url})


# 2,绑定qq用户和美多用户
class QQAuthUserView(View):
    def get(self,request):
        #1,获取参数(code,state)
        code = request.GET.get("code")
        state = request.GET.get("state","/")

        #2,校验
        if not code:
            return http.HttpResponseForbidden("code丢失")

        #3,获取access_token
        oauth_qq = OAuthQQ(client_id=settings.QQ_CLIENT_ID,
                client_secret=settings.QQ_CLIENT_SECRET,
                redirect_uri=settings.QQ_REDIRECT_URI,
                state=state
                )
        try:
            access_token = oauth_qq.get_access_token(code)
        except Exception:
            return http.HttpResponseForbidden("code已过期")

        #4,获取openid
        openid = oauth_qq.get_open_id(access_token)

        #5,通过openid,查询qq授权用户
        try:
            oauth_qq_user = OAuthQQUser.objects.get(openid=openid)
        except Exception as e:
            #5,1 初次授权,加密openid,返回授权页面
            encrypt_openid = encode_openid(openid)
            context = {"token":encrypt_openid}
            return render(request,'oauth_callback.html',context=context)
        else:
            #6,1 非初次授权,获取美多用户
            user = oauth_qq_user.user

            #6,2 状态保持
            login(request,user)

            #6,3 返回响应
            response = redirect("/")
            response.set_cookie("username",user.username)
            response = merge_cookie_redis_cart(request,response,user)
            return response

    def post(self,request):
        #1,获取参数
        openid = request.POST.get("access_token")
        mobile = request.POST.get("mobile")
        password = request.POST.get("pwd")
        sms_code = request.POST.get("sms_code")

        #2,校验参数
        #2,1 为空校验
        if not all([openid,mobile,password,sms_code]):
            return http.HttpResponseForbidden('参数不全')

        #2,2 校验openid
        openid = decode_openid(openid)

        if not openid:
            return http.HttpResponseForbidden("openid已过期")

        #2,3 短信验证码校验
        redis_conn = get_redis_connection("code")
        redis_sms_code = redis_conn.get("sms_code_%s"%mobile)
        if not redis_sms_code:
            return http.HttpResponseForbidden("短信验证码已过期")

        if sms_code != redis_sms_code.decode():
            return http.HttpResponseForbidden("短信验证码错误")

        #2,3 账号密码,正确性
        user = authenticate(request, username=mobile, password=password)

        #3,数据入库,判断用户对象
        if user:
            #3,1 创建qq授权对象
            oauth_qq_user = OAuthQQUser()

            #3,2 关联美多用户和 openid
            oauth_qq_user.user = user
            oauth_qq_user.openid = openid

            #3,3 入库
            oauth_qq_user.save()

            #3,4 状态保持,返回响应
            login(request,user)
            response = redirect('/')
            response.set_cookie("username",user.username)
            response = merge_cookie_redis_cart(request, response, user)
            return response
        else:
            #4,1 创建美多用户
            user = User.objects.create_user(username=mobile,password=password)

            #4,2 创建qq授权对象
            oauth_qq_user = OAuthQQUser()

            #4,3 关联美多用户和openid,入库
            oauth_qq_user.user = user
            oauth_qq_user.openid = openid
            oauth_qq_user.save()

            #4,4 状态保持,返回响应
            login(request,user)
            response = redirect('/')
            response.set_cookie("username",user.username)
            response = merge_cookie_redis_cart(request, response, user)
            return response


# 3 获取微博登陆页面
class OAuthSinaURLView(View):
    def get(self, request):
        next_url = request.GET.get('next',"/")

        # 创建授权对象
        weibo_client = sinaweibopy3.APIClient(app_key=settings.APP_KEY,
                                        app_secret=settings.APP_SECRET,
                                        redirect_uri=settings.REDIRECT_URL)
        # 生成授权地址

        login_url =weibo_client.get_authorize_url()

        # 响应
        return http.JsonResponse({
            'code': RET.OK,
            'errmsg': "OK",
            'login_url': login_url
        })


class OAuthSinaOpenidView(View):
    def get(self, request):
        code = request.GET.get('code')

        # 校验code
        if not code:
            return http.HttpResponseForbidden("code丢失")

        # 创建微博对象
        weibo_client = sinaweibopy3.APIClient(app_key=settings.APP_KEY,app_secret=settings.APP_SECRET,redirect_uri = settings.REDIRECT_URL)


        # 1.根据code获取access_token
        result = weibo_client.request_access_token(code)
        weibo_client.set_access_token(result.access_token, result.expires_in)
        openid = result.uid

        # 判断是否初次授权
        try:
            weibo_ser = OAuthSinaUser.objects.get(uid=openid)
        except:
            # 未查到数据，则为初次授权，显示绑定页面
            # 将openi加密
            json_str = encode_openid({"openid": openid})
            # 显示绑定页面
            context = {
                'token': json_str
            }
            return render(request, 'oauth_callback.html', context)
        else:
            # 查询到授权对象，则状态保持，转到相关页面
            user = weibo_ser.user
            login(request, user)

            response = redirect('/')
            response.set_cookie('username', user.username)
            return response


    def post(self, request):
        # 接收：openid,mobile,password,sms_code
        access_token = request.POST.get('access_token')
        mobile = request.POST.get('mobile')
        pwd = request.POST.get('pwd')
        sms_code = request.POST.get('sms_code')
        state = request.GET.get('state', '/')

        # 验证：参考注册的验证
        openid_dict = decode_openid(access_token)
        if openid_dict is None:
            return http.HttpResponseForbidden('授权信息无效，请重新授权')
        openid=openid_dict.get('openid')

        # 处理：初次授权，完成openid与user的绑定
        # 1.判断手机号是否已经使用
        try:
            user = User.objects.get(mobile=mobile)
        except:
            # 2.如果未使用，则新建用户
            user = User.objects.create_user(mobile, password=pwd, mobile=mobile)
        else:
            # 3.如果已使用，则验证密码
            # 3.1密码正确，则继续执行
            if not user.check_password(pwd):
                # 3.2密码错误，则提示
                return http.HttpResponseForbidden('手机号已经使用，或密码错误')

        # 4.绑定：新建OAuthSinaUser对象
        qquser = OAuthSinaUser.objects.create(
            user=user,
            uid=openid
        )
        # 状态保持
        login(request, user)
        response = redirect(state)
        response.set_cookie('username', user.username)

        # 响应
        return response







